Button-drilling machine



dln Model.) 2 Sheets-Sheet l.

M. CHERNIC. BUTTON DRILLING MAGHINB.

Patented Mar. 24, 1896.

l l l (No Model.) 2 sheenssheet 2.

M. CHERNIC'.

BUTTON DRILLING MACHINE.

KNo.v 556,734. Patented Mar. 24, 1896.

UNITED STATES PATENT Erica MARCUS CIIERNIC, OF PHILADELPHIA, PENNSYLVANIA.

BUTTON-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 556,734, dated March 24, 1896.

Serial No. 555,852. (No model.)

To all whom t may concern.l

Be itknown that I, Masons CHERNIC, a subject of the Czar of Russia, residing at the city of Philadelphia, in the county ot Philadelphia and State of Pennsylvania., have invented certain neur and useful Improvements in Button- Drilling Machines, of which the following is a specification.

My invention has relation to a button-drilling machine of the class known as multiple drills, in which one or more button-blanks are simultaneously pierced by two or more drills; and in such connection it relates more particularly to the construction and arrangement of such a machine. I

The principal objects of my invention are, first, to provide a multiple drill for piercing button-blanks, which shall be simple in construction, reliable, efficient and durable in operation; second, to provide a button-drilling machine in which the chuck receiving the button-blanks to be pierced is adapted to be fed gradually or quickly to or from the drillpoints.

My invention, stated in general terms, consists of a button-drilling machine constructed and arranged in substantially the manner hereinafter described and claimed.

The nature, characteristic features and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, formingpart hereof, and in Which- Figure 1 is a side elevational view of a button-drilling machine embodying features of my invention. Fig. 2 is a top or plan view of the saine. Fig. 3 is an end elevation of the power end of the machine. Fig. el is a vertical section taken on the line of Fig. l.

Fig. 5 is an enlarged longitudinal section taken on the line y y of Fig. l. Fig. G is an enlarged side elevational view of the grooved guide. Fig. 7 is an end elevation of the larger end of said guide. Fig. S` is a similar viewof Y the smaller end of said guide, and Fig. E) is a ci.oss-sectional view taken on the line of Fig.

Referring to the drawings, A represents the bed-plate of the button-drilling machine supported upon standards A'. At one end ofthe machine, in one of the standards A and hanger A2, is mounted a shaft I3, provided with fast and loose power-pulleys C and C'. On the end of the shaft B is also mounted a grooved pulley D. Upon suitable uprights or standards E and E are supported in converging planes the drill-spindles a, the buttends h of which are provided with grooved pulleys c, which are connected to each other and the grooved pulley D on the power-shaft by means of an endless band or belt F, substantially as indicated in Figs. l and 3 of the drawings. The band or belt F passes also tween the pulleys c and the power-pulley l). This tension pulley or roll d is mounted upon a shaft d', which has an adjustable bearing d2 in the upright E, and the bearing d2 is controlled by an adjusting-sereT d3.

In the ends of the spindles a are secured the drill-points c, which are received and supported in a grooved guide f and confined thereto by a sleeve f', substantially as illustrated in Fig. 5. The guide f and sleeve f are both supported in a standard or upright G. vThe base f2 ot the guide f is conical and terminates at its forward end in a cylindrical or straight portion f5. The conical section f2 is grooved with square or substantially square channels f4, slightly Wider than the diameter of the drill-points e, andy inclined at the same plane of inclination as said drills to receive the converging drill-spindles a. These channels f4 are continued in the straight portion f3 in a horizontal plane, as indicated at f5, and the Width of the channels in the straight portion is the saine or approximately so as the diameter of the drill-points e. The drill-points e are confine-d in the channels of the guide by the sleeve f, and are bent from converging planes to horizontal parallel planes and presented in the latter position to the button-blanks II. Surrounding the sleeve f', and secured to the standard G, is a screw-threaded collar g, on which is adapted to be secured one end of a split thimlole or sleeve h, which projects beyond the free ends of the drill-points. This thimble 7L is preferably made of spring metal, and its end h' receives the end of the chuck.

The chuck for the button-blanks II consists of a split thimble or sleeve L of spring metal, the end .7.3 of 'which enters the end h of the thimble 72 and is compressed thereby. In

over a tension pulley or roll d, interposed be- ICO the chuck k are introduced one or more button-blanks II, of slightly larger diameter than the internal diameter of the chuck 7o, so that the blanks when placed in position must be pushed in against the spring tension of the chuck and arek confined in the same under spring tension.

The drill-points e project beyond the end of the guide f a distance suicient to penetrate or pierce the button-blanks held in the chuck. It frequently happens that if these projecting drill-points are left unprotected they will be easily broken off by feeding the button-blanks too quickly or otherwise, and hence to protect the points use is made of a sleeve fm, which projects to the ends of the drill-points and has a range of longitudinal or horizontal movement on the sleeve f being normally thrown outward to the end of the drill-points by means of a spring m. This spring m is coiled around the sleeve f and abuts against an extension of the said sleeve secured in the standard G. The movable spring-sleeve m is located within the thimble h, and when the chuck k enters this thimble the said spring-sleeve is gradually forced backward by the chuck to expose the drill-points more and more as the chuck and button-blanks are advanced.

The chuck 7c terminates in an enlargement 7a2, which is secured by a pin or otherwise to a hollow shaft n, the rear end of which terminates in a box o, having exterior guides or keys o', adapted to slide in corresponding` guideways or keyways o2 of a support or standard K. The hollow shaft n is guided and supported in a standard or upright K and slides back and forth therein when advanced toward or away from the drill-points e, as hereinafter described. The hollow shaft n is secured to or formed integral with a cross-bar p, which in turn is pivotall y secured at either end to one end of a link p. The free end of the link p is pivotally secured to an arm p2 of a shaft p3, which extends above the bedplate A, crosswise of the machine. To the shaft p3 and on one side of the machine is also secured a crank-arm p4, which is pivoted to one end of a link or rod p". The other end of the said link or rod p5 is pivotally secured to one end of alever ortreadle-arm p6, which lever-arm p6 is pivoted at the other end in a bracket p7 depending from the under side of the bed-plate A. The lever p is guided in a bracket p8 and is normally thrown upward under the tension of a spring p, one end of which is secured in the said bracket p8, while the other end abuts against the lever 1J, as illustrated in Fig. 4. Vhen the lever p is depressed against the tension of its spring, the link or rod p5 is lowered, thereby depressing the crank-arm p4, which actuates the shaft p3 and depresses the arms p2. These arms p2,

through the links 1) and cross-arm p, slide the shaft a longitudinally toward the drillpoints to feed the chuck and button-blanks lVhen the lever p6 is up to the drill-points.

released, the spring p9 throws the lever upward, thereby, through the connections hereinbefore explained, returning the cross-arm p and the shaft n to their normal positionsthat is to say, the position in which the chuck is drawn out of the thimble 7L and away from the drill-points.

lVithin the chuck 7e, hollow shaft n and box 0 extends a hollow or partially holloWed-out rod r, the end of which adjacent to the drillpoints being provided with a removable plug 7", which rest-s immediately behind the button-blanks II. The other end of this rod f' extends beyond the box o, so that when the box and rod are drawn back to their normal positions away from the drill-points this end of the tube will strike against a plate s, secured to the bed-plate and extending upward at right angles thereto. The tube or rod o* is held frictionally within the shaft n and the box o, and when it strikes against the plate s the plug` end /r will knock against the button-blanks I'I and will eject the same from the chuck. To accommodate a greater or less number of button-blanks in the chuck. the plug fr may be removed and another with a thicker or thinner head, r2, substituted therefor.

In operation the chuck k is normally withdrawn from the thimble h and drill-points e by the spring p9, by the lever p6. By depressing the handle 7L" of the said lever p the chuck 7c is caused to approach the thimble and the drill-points, as hereinbefore explained. Such movement given to the chuck is gradual or rapid according to the movement of the lever 276, which is under the control of the operator. If for any reason, such as the breaking of a drill-point or the dislodging of a button-blank, the chuck should be quickly retracted from the drill-points. the lever p6 can be released and its spring, as hereinbefore explained, will then throw it upward to thus, through the various connections, retract the chuck from the thimble 7L. When the chuck is thus advanced in the thimble 7L against the drill-points, the springsleeve m is gradually forced backward over the sleeve f', exposing more and more of the drill-points to the buttons. At the same time the chuck is telescoped in the thimble and is compressed thereby, the button-blanks being thus more and more tightly clamped in the chuck, as they are fed farther and farther onto the drill-points. After the blanks have been pierced the lever p is released and the chuck and shaft are retracted until the tube or rod r strikes against the plate s, and the plug r of the said rod fr' then ejects the blanks from the chuck.

I do not in the present application claim the arrangement of the drill-spindles converging from end to end, in combination with the grooved guide and sleeve adapted to receive the converging drill-points, adapted to bend the same into horizontal parallel operative position. Neither do I claim herein the fea- ZIO ture of ad j usting` the ej ecting-plug` traversing the chuck to permit of the reception andl ejection of more or less blanks in and from the chuck, as both of the said features form the subject-matter of another application for a patent filed by nie under date of July l5, 1895, and serially numbered 556,055.

Having thus described the nature and objects of my invention, what I claiin as new, and desire to secure by Lei-ters Patent, is

l. In a drilling-machine of the character described, a chuck adapted to receive blanks to be pierced, a support for said chuck, a shaft carrying said chuck and movable in said support, a cross-arm 'secured to said shaft, a link pivotally connected at one end to said cross-arm, a crank-arm pivotally attached at the other end of said link, ashaft carrying,` said crank-arm, a second crank-arm secured to said shaft, a rod pivotally connected with one end of said second crankarin and a lever adapted to raise and lower said rod, substantially as described.

2. In a drilling-machine of the character described, a chuck adapted to receive blanks to be pierced, a hollow shaft carrying said chuck, a support for said shaft, a cross-arm secured to said shaft, a link pivotallysecured at one end to said cross-arm, a crank-arm pivotally secured to the other end of said link, a shaft carrying said crank-arm, a second crank-arm secured to said shaft, a rod pivotally secured at one end to the free end of said crank-arm, a lever pivoted at one end to the machine and at the other end to said rod, a guide-bracket for said lever, a spring interposed between the bracket and the lever and adapted to elevate said lever in said bracket, all arranged so that when the lever is depressed against the tension of said spring the shaft and chuck, through the connecting mechanism, are advanced in their support, and when the lever is released the said lever is elevated by said spring to thereby retract said chuck and shaft, substantially as and for the purposes set forth.

In testimony whereof I have hereunto set my signature in the presence of two subscribin g witnesses.

MARCUS CIIERNIC.

lVitnesses:

J. WALTER DoUGLAss, WILHELM Voer. 

